Year Percent 2005 98.15308 2006 98.15308 2007 98.15308 2008 98.15308 2009 98.15308 2010 96.82411 2011 95.49513 2012 94.16616 2013 92.83719 2014 91.50821 2015 90.17924 2016 88.85027 2017 87.52129 2018 86.19232 2019 84.86334 2020 83.53437 2021 82.2054 2022 82.2054